Kiyotaka Ikejo

Last Updated :2025/05/09

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Assistant Professor
E-mail
ikejohiroshima-u.ac.jp

Basic Information

Major Professional Backgrounds

  • 1983/04/01, 1985/01/31, Ishikawajima-Harima Heavy Industries Co., Ltd,, engineer
  • 1990/04/01, 2007/03/31, Hiroshima University, Faculty of Engineering, Research Associate
  • 2007/04/01, 2020/03/31, Hiroshima University, Graduate School of Engineering, Assistant Professor

Academic Degrees

  • Doctor of Engineering, Hiroshima University
  • Master of Engineering, Hiroshima University

Educational Activity

  • [Bachelor Degree Program] School of Engineering : Cluster 1(Mechanical Systems, Transportation, Material and Energy) : Program of Mechanical Systems Engineering
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Mechanical Engineering Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Mechanical Engineering Program

In Charge of Primary Major Programs

  • Mechanical System Engineering

Research Fields

  • Engineering;Mechanical engineering;Design engineering / Machine functional elements / Tribology

Research Keywords

  • Gear Drives
  • Power Transmission
  • Tribology
  • Lubrication
  • Machine Element

Affiliated Academic Societies

  • JAPANESE SOCIETY OF TRIBOLOGISTS
  • Japan Sociaty of Mechanical Engineers
  • JAPAN SOCIETY FOR DESIGN ENGINEERING
  • Japan Society FOR Precision Engineering
  • The Society of Automotive Engineers of Japan (JSAE)

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, 2Term, Design and Optimization of Mechanical Systems
  2. 2025, Undergraduate Education, First Semester, Experiments in Mechanical Engineering I
  3. 2025, Undergraduate Education, First Semester, Experiments in Mechanical Engineering I
  4. 2025, Undergraduate Education, Second Semester, Machine Design and Drawing
  5. 2025, Undergraduate Education, 1Term, Machine Elements Design II
  6. 2025, Undergraduate Education, Year, Graduation Thesis
  7. 2025, Graduate Education (Master's Program) , 1Term, Special Exercises on Mechanical Engineering A
  8. 2025, Graduate Education (Master's Program) , 2Term, Special Exercises on Mechanical Engineering A
  9. 2025, Graduate Education (Master's Program) , 3Term, Special Exercises on Mechanical Engineering B
  10. 2025, Graduate Education (Master's Program) , 4Term, Special Exercises on Mechanical Engineering B
  11. 2025, Graduate Education (Master's Program) , Year, Special Study on Mechanical Engineering
  12. 2025, Graduate Education (Doctoral Program) , Year, Special Study on Mechanical Engineering

Research Activities

Academic Papers

  1. Laser diagnosis technology to evaluate gear surface condition, 25-28, 201805
  2. Applying a Manipulator with a Laser Sensor to a Portable Device for Various Gears Surface Diagnosis, Proceedings of the 2020 JSME Conference on Robotics and Mechatronics, Kanazawa, Japan, May 27-29, 2020, 1A1-K07, 20200527
  3. Tooth Profile Error Detection Only Using a Small Spot Type of Laser Sensor, Proceedings of International Conference on Gears 2022, 707-714, 20220912
  4. Development of In-Situ Portable Gear Damage Diagnostic System Using Laser Reflection, Proceedings of The 8th International Conference on Manufacturing, Machine Design and Tribology (ICMDT2019), April 24-27, 2019, Kagoshima, Japan, TH-B-3-3, 20190424
  5. Two Dimensional Damage Diagnosis on a Gear Tooth Surface using a Zonal Laser Beam, Proceedings of International Gear Conference 2018, Lyon Villeurbanne, France, 27-29 August 2018International Gear Conference 2018, Lyon Villeurbanne, France, 27-29 August 2018International Gear Conference 2018, Lyon Villeurbanne, France, 27-29 August 2018, 1410-1417, 20180827
  6. In Situ Diagnosis of a Gear-Tooth Surface Damage Using Laser Scattering, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 5(3), 199-213, 2011
    Link to Paper Search Results by DOI
  7. On the Heat Balance of Gear Equipment (On a Method for Predicting the Bulk Temperature Rise of Geans and Temperature Rise of Oil with Dip Cooling), 34(1), 97-105, 19910301
  8. Study on Friction Loss of Internal Gear Drives (Influence of Pinion Surface Finishing, Gear Speed and Torque), 34(1), 106-113, 19910301
  9. Meafurment of Oil Film Temperature and Pressure in Traction Drive, Preprint of Japan Society of Mechanical Engineers, 938(3), 19, 19931001
  10. Effciency of Contiously Variable Speed-Ratio Transmission coupling Differential Gear with Variable Speed-Ratio Belt Drive, 12, 11, 19940601
  11. Vibration Characteristics of Non-Involute Herical gears, Preprint of Japan Society of Mechanical Engineers, 97(14), 317, 19970801
  12. Effect of Various Gear Oils on Rippling Failure, 16, 30-35, 19980601
  13. Load Distribution and Tooth Root Stress of Spiral Bevel Gears, 985(2), 77-78, 19981001
  14. Vibration Chracteristics of Ground Non-Invoiute, 985(2), 79-80, 19980801
  15. Influence of Raius and Rotational Speed on Rippling Failure, 995(1), 129-130, 19990301
  16. Self-Locking of 2K-H Type Planetary Gear mechanism, 998(3), 183-184, 19991001
  17. On Rippling Failure and Lubri Cating Oil, 447-448, 19991001
  18. Effect of Lubricating Oil Additive on Roller Surface Failure under High Pressure at Low Speed., 005(1), 427-428, 20000301
  19. Research of Self-Locking in 2K-H type planetary Gear Mechanism with External Gears, 00(1), 433-434, 20001001
  20. Design of Gear Pumps with Non-Involute Tooth Profile, 005-1, 333-334, 20000901
  21. Equivalent meshing error at the edge of gear tooth tip, 01(11), 43-46, 20010401
  22. Method to find Interference in Internal Gear Pair Considering the Tooth Deflection, 46(1), 41-47, 19971201
  23. Effect of Various Gear-oils on Rippling Failure, 30-35, 19980401
  24. Load Distribution and Tooth Root Stress of Spiral Bevel Gears, 77-78, 19980401
  25. Vibration Characteristics of Ground Non-involute Helical Gears, 79-80, 19980401
  26. Influence of Roller Radius and Rotational Speed on Rippling Failure, 129-130, 19990401
  27. Self-Locking of 2K-H type Planetary Gear Mechanism, 183-184, 19990401
  28. On Rippling Failure and Lubrication Oil, 447-448, 19990401
  29. Analysis and Prevention of Polygonal Wear on Roll Covered with Runner, 48(1), 21-29, 19990401
  30. Tooth Surface Durability of Non-Involute Helical Gears, 331-332, 20000401
  31. Design of Gear Pumps with Non-Involute Tooth Profile, 333-334, 20000401
  32. Air Compressor Using Z-mechanism, 27-32, 20000401
  33. Effect of Lubricating Oil Additive on Roller Surface Failure under High, Pressure at Low Speed, 427-428, 20000401
  34. Research of Self-Locking in 2K-H type Planetary Gear Mechanism with External Gears, 433-434, 20000401
  35. Vibration Characteristics and Surface Durablity of Non-Involute Helical Gears, 317-318, 20010301
  36. Effect of Additives of Lubricating Oil on Rippling Failure, Proceeding of MPT2001- Fukuoka The JSME International Confrence on Motion and Power Transmissions Nov. 15-17= 2001 Fukuoka JAPAN, 267-272, 20011101
  37. ★, Load Distribution and Tooth Root Stress of Spiral Bevel Gear, Proceeding of MPT2001- Fukuoka The JSME International Confrence on Motion and Power Transmissions Nov. 15-17= 2001 Fukuoka JAPAN, 290-295, 20011101
  38. ★, Design and Performance of Gear Pumps with Non-Involute Tooth Profile, Proceeding of MPT2001- Fukuoka The JSME International Confrence on Motion and Power Transmissions Nov. 15-17= 2001 Fukuoka JAPAN, 689-694, 20011101
  39. Method to find Interference in Internal Gear Pair Considering the Tooth Dflection, Bulletin of the Faculty of Engineering= Hiroshima University, 46(1), 41-47, 19971201
  40. ★, Analysis of Torsional Vibration in Power Circulating-Type Internal Gear Testing Machine, Transactions of the Japan Society of Mechanical Engineers, 62(601), 3654-3660, 19960901
  41. Vibration and Noise of Internal Gear Drive, Transactions of the Japan Society of Mechanical Engineers, 60(570), 680-686, 19940201
  42. ★, Effect of Contact Ratio on Friction Loss of Internal Gear Drives, Transactions of the Japan Society of Mechanical Engineers, 58(555), 3377-3385, 19921101
  43. Effect of Lubricating Oils on Friction Loss of Internal Gear Drives, Transactions of the Japan Society of Mechanical Engineers, 58(545), 245-251, 19920101
  44. On the Heat Balance of Gear Equipment (On a Method for Predicting the Bulk Temperature Rise of Gears and Temperature Rise of Oil with Dip Cooling), Transactions of the Japan Society of Mechnanical Engineers, 55(514), 1438-1445, 19890601
  45. ★, VIBRATION CHARACTERISTICS AND SURFACE DURABILITY OF NON-INVOLUTE HELICAL GEARS, 20000901
  46. Effect of Lubricating Oil on Prevention of Rippling Failure, 68(672), 2444-2450, 20020801
  47. Tooth Bending Strength and Surface Durability of Super-Carburized Steel Gear, 51(1), 9-15, 20021201
  48. Effect of Traction Oil on Gear Efficiency, 261-262, 20030301
  49. Efficiency and Noise of Plastic Worm Gear with Small Module Tooth, 267-268, 20030301
  50. Power Loss of Bevel Gear Drives, 69(680), 1086-1093, 20030401
  51. Load Distribution and Tooth Root Stress of Modified Cycloid Helical Gear, 375-376, 20020301
  52. Efficiency of Plastic Worm Gear with Small Module Tooth, 377-378, 20020301
  53. Power Loss of Bevel Gear Drive, 53-56, 20020401
  54. Friction Loss of Non-Involute Tooth Profile Gears, 19-20, 20020901
  55. Performance of Gear Pumps with Asymmetric Tooth Profile, 253-254, 20021001
  56. Design of Gear Pumps with Asymmetric Tooth Profile, 151-152, 20010801
  57. Friction Loss of Involute-Cycloid Composite Tooth Profile Spur Gear, 155-156, 20010801
  58. Influence of Center Distance Error on Driving Performance of Involute-Cycloid Composite Tooth Profile Gear, 57-60, 20030401
  59. Operational Characteristic of 2K-H Type Differential Gear Mechanism with External Gears, 11-15, 20030601
  60. Effect of Biodegradable Oil on Surface Failure of Spur Gears, 13-14, 20030801
  61. Self-Locking of 2K-H Type Planetary Gear, 37-40, 20040401
  62. Design of Gear Pump with Trochoid Tooth Profile, 14-19, 20040601
  63. Effects of Carburizing Method and Shot Peening on Gear Strength, 39(8), 456-463, 20040801
  64. Design and performance of gear pumps with a non-involute tooth profile, Proceedings of the Institution of Mechanical Engineers (IMechE= UK) Part B: Journal of Engineering Manufacture, 218, 699-711, 20040801
  65. Strength and Driving Performance of Involute-Cycloid Composite Tooth Profile Spur Gears, 13-14, 20040901
  66. Effect of Traction Oil on Power Loss of Gear, 531-532, 20041101
  67. Friction Loss of Non-Involute Tooth Profile Helical Gears, 17-20, 20041101
  68. Efficiency and Noise of Plastic Worm Gear with Small Module Tooth, 21-23, 20041101
  69. Optimum Design of the Involute-Cycloid Composite Tooth Profile Helical Gear, Proceeding of MPT2004 Symposium of JSME, 35-38, 20041101
  70. Vibration Characteristics and Surface Durability of Non-Involute Helical Gear, Bulletin of Graduate School of Engineering= Hiroshima University, 53(1), 73-79, 20041201
  71. Optimum Design of the Involute-Cycloid Composite Tooth Profile Helical Gear, Bulletin of Graduate School of Engineering= Hiroshima University, 53(1), 81-86, 20041201
  72. Optimum Design of the Involute-Cycloid Composite Tooth Profile Helical Gear, Bulletin of Graduate School of Engineering= Hiroshima University, 53(1), 81-86, 20041201
  73. Vibration Characteristics and Surface Durability of Non-Involute Helical Gear, Bulletin of Graduate School of Engineering= Hiroshima University, 53(1), 79-71, 20041201
  74. Optimum Design of the Involute-Cycloid Composite Tooth Profile Helical Gear, Proceeding of MPT2004 Symposium of JSME, 04(17), 35-38, 20041101
  75. Efficiency and Noise of Plastic Worm Gear with Small Module Tooth, Proceeding of MPT2004 Symposium of JSME, 04(17), 21-23, 20041101
  76. Friction Loss of Non-Involute Tooth Profile Helical Gears, Proceeding of MPT2004 Symposium of JSME, 04(17), 17-20, 20041101
  77. Effect of Traction Oil on Power Loss of Gear, Proceeding of JAST Tribology Conference Tottori= Nov 2004, 531-532, 20041101
  78. Strength and Driving Performance of Involute-Cycloid Composite Tooth Profile Spur Gears, 04(1), 13-14, 20040101
  79. Design and performance of gear pumps with a non-involute tooth profile, Proceedings of the Institution of Mechanical Engineers (IMechE= UK) Part B: Journal of Engineering Manufacture, 218, 699-711, 20040801
  80. Effects of Carburizing Method and Shot Peening on Gear Strength, JOURNAL OF JSDE, 39(8), 456-463, 20040801
  81. Design of Gear Pump with Trochoid Tooth Profile, 21, 14-19, 20040601
  82. Self-Locking of 2K-H Type Planetary Gear, 04(08), 37-40, 20040401
  83. Power Loss of Spur Gear Drive Lubricated with Traction Oil, 20030901
  84. Tooth Root Stress and Tooth Contact Stress of the Modified Cycloid Herical Gear, 20030901
  85. Power Loss of Bevel Gear Drives, Transactions of JSME, 69(68), 1086-1093, 20030401
  86. Operational Characteristic of 2K-H Type Differential Gear Mechanism with External Gears, 20, 11-15, 20030601
  87. Influence of Center Distance Error on Driving Performance of Involute-Cycloid Composite Tooth Profile Gear, 03(03), 57-60, 20030301
  88. Tooth Bending Strength and Surface Durability of Super-Carburized Steel Gear, 51(1), 9-15, 20021201
  89. Performance of Gear Pumps with Asymmetric Tooth Profile, 02(10), 19-20, 20020901
  90. Friction Loss of Non-Involute Tooth Profile Gears, 02(1), 19-20, 20020801
  91. Load Distribution and Tooth Root Stress of Modified Cycloid Helical Gear, 025(1), 377-378, 20020301
  92. Efficiency of Plastic Worm Gear with Small Module Tooth, 025(1), 377-378, 20020301
  93. Vibration Characteristics of Gear with Tooth Surface Failure, 7-12, 20050601
  94. Effect of Biodegradable Oil on Surface Failure of Spur Gears, Proceedings of The 1st International Conference on Manufacturing= Machine Design and Tribology June 23-24 2005= Seoul= EGI-305(CD-ROM), 20050601
  95. Vibration and Noise of Internal Gear Drive, Transactions of the Japan Society of Mechanical Engineers, 60(570), 680-68, 19940201
  96. FRICTION LOSS OF NON-INVOLUTE TOOTH PROFILE GEARS, 20050901
  97. Friction Loss of Non- Involute Tooth Profile Helical Gears, Proceedings of International Conference on Gears Europe invites the Woeld=September 14th-16th= 2005 Garhing near Munch= Germany, VDI-Berichte 1904.2, 1487-1503, 20050901
  98. Development of a Walking Assist Machine Supporting Whole Legs from Their Soles, 72(724), PP. 3871-3877, 20061225
  99. Damage Diagnosis on Gear Tooth Surface Using a Laser Beam Defection, Proceedings of the International Conference on Mechanical Transmissions ICMT'2006, PP.990-995, 20060901
  100. Design and performance of gear pumps with a non-involute tooth profile, PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE, 218(7), 699-711, 200407
    Link to Paper Search Results by DOI
  101. Analysis of the Dynamic Characteristics of Elliptical Gears, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 6(4), 484-497, 2012
    Link to Paper Search Results by DOI
  102. Vibration and Noise Characteristics of Elliptical Gears due to Non-Uniform Rotation, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 6(4), 498-512, 2012
    Link to Paper Search Results by DOI
  103. Simulation on the vibration characteristics of elliptical gears, PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 227(C4), 819-830, 2013
    Link to Paper Search Results by DOI
  104. Development of a Damage Diagnosis for a Gear using a Laser Beam (A Proposal for a Method of Creating Benchmark Data to be used in Diagnosis), JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 7(3), 348-361, 2013
    Link to Paper Search Results by DOI
  105. A Prediction Method of Wear on Tooth Surface for Spur Gears, ASME Paper No. DETC2013-12748, 201308
  106. A Statistical Approach to Damage Diagnosis of Gear, 227-230, 201308
  107. Development of a Diagnosis Method of a Gear Tooth Surface by Predicting Laser Beam Reflection, ASME Paper No. DETC2013-12993, 201308
  108. Development of an automatic remote diagnostic system for a gear tooth surface using a laser beam and the reflection prediction method, 993-1004, 20131007
  109. Vibration Characteristics of Elliptical Gears, 1505-1508, 201310
  110. Application of Statistical Parameters and Discrete Wavelet Transform to Gear Damage Diagnosis, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 8(2), Paper No.14-00057 2014jamdsm0013, 201406
  111. Gear Damage Diagnosis and Classification Based on Support Vector Machines, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 8(3), Paper No.14-00058 2014jamdsm0021, 201407
  112. Diagnosis for Gear Tooth Surface Damage by Empirical Mode Decomposition in Cyclic Fatigue Test, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 8(3), Paper No.14-00260, 201410
  113. Easy Set-up and In Situ Automatic Gear Diagnostic System Using Laser Beam Reflection without a Rotary Encoder, Proceedings of International Gear Conference August 26-28, 2014, Lyon , France, 1110-1119, 201408
  114. Detection of Damaged Tooth by Support Vector Machines, Proceedings of 2014 2nd Asia conference on Applied Mechanics and Materials Engineering (ACMME 2014), Applied Mechanics and Material Taipei, Taiwan, July 28-29, 627, 79-83, 201407
  115. Analysis of Torsional Vibration in Elliptical Gears, Proceedings of The 3rd International Conference on Design Engineering and Science, ICDES 2014　Pilsen, Czech Republic, August 31- September 3, 2014,, 3, 38-43, 201408
  116. Damage Diagnosis of Gear Tooth Surface with a Nearest Neighbor Method, Proceedings of The 6th International Conference on Manufacturing, Machine Design and Tribology (ICMDT) Okinawa Convention Center, Okinawa, Japan, April 22-25, 2015, 194-195, 201504
  117. Diagnosis of gear damage based on coefficient of variation method by analyzing vibration accelerations on one gear tooth, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 10(16), 2016
  118. ★, Friction Loss of Non-Involute Tooth Profile Gears（For Involute-Cycloid Composite Tooth Profile Gear and Modified Cycloid Tooth Profile Gear）, JOURNAL OF JAPAN SOCIETY FOR DESIGN ENGINEERING, 51(4), 257-272, 201604
    Link to Paper Search Results by DOI
  119. Easy Set-up and In Situ Automatic Gear Diagnostic System Only Using Laser Reflection, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 10(4), 2016
  120. Reduction of Oil Churning Loss for Spur Gear Drive in Oil Bath Lubrication with a Baffle Plate, Extended Abstract of International Tribology Conference, TOKYO 2015 September 16th - 20th, 2015, Tokyo, Japan, 1088-1089, 20150916
  121. DEVELOPMENT OF THE EASY SET-UP AND IN SITU AUTOMATIC GEAR DIAGNOSTIC SYSTEM USING A LASER BEAM, Proceedings of the ASME 2015 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2015 August 2-5, 2015, Boston, Massachusetts, USA, ASME Paper No. DETC2015-47252, 20150802
  122. OPTIMIZATION OF PROFILE MODIFICATIONS WITH REGARD TO DYNAMIC TOOTH LOADS IN PLANETARY GEARS WITH FLEXIBLE RING-GEARS, 3-3, 20160415
  123. GEAR TOOTH ROOT STRESSES OF A VERY HEAVILY LOADED GEAR PAIR – CASE STUDY: ORBITER BODY FLAP ACTUATOR PINION AND RING GEAR, 7-7, 20160415
  124. CORRELATION OF RELEVANT CASE PROPERTIES AND THE FLANK LOAD CARRYING CAPACITY OF CASE-HARDENED GEARS, 8-8, 20160415
  125. Damage diagnosis of gear tooth surface with a nearest neighbor method, 314-1-314-3, 20150227
  126. Easy set-up and in situ automatic gear diagnostic system using only laser reflection, JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 10(4), 2016
    Link to Paper Search Results by DOI
  127. DAMAGE DIAGNOSIS OF GEAR TOOTH SURFACE WITH NEAREST NEIGHBOR METHOD, Proceedings of MPT 2017 – Kyoto The JSME International Conference on Motion and Power Transmissions February 28 -March 3, 2017, Kyoto, Vol. I, 242-245, 201703
  128. EFFECT OF TOOTH PROFILE MODIFICATION ON TOOTH WEAR OF INVOLUTE SPUR GEAR, Proceedings of MPT 2017 - Kyoto The JSME International Conference on Motion and Power Transmissions February 28 -March 3, 2017, Kyoto, Japan,, Vol. I, 320-323, 201703
  129. Calculation of Tooth Root Stress and Deformation for Asymmetric Spur Gears by Two-Dimensional Elastic Theory, Proceedings of 16th International Conference on Precision Engineering Hamamatsu Japan 14(Mon.)-16(Wed.), November 2016, Paper No. P07-8193, 201611
  130. REDUCTION OF VIBRATION IN SPUR GEARS BY AN ASYMMETRIC TOOTH PROFILE WITH HIGH CONTACT RATIO, Proceedings of the ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference IDETC/CIE 2017 August 6-9, 2017, Cleveland, Ohio, USA, ASME Paper No. DETC2017-67256, 20170806
  131. Laser diagnosis technology to evaluate gear surface condition, 25-25, 201805

Invited Lecture, Oral Presentation, Poster Presentation

  1. Diagnosis of Gear Surface Failure without Pre-Training Data, Takumu KOMABA, Syota HORI, Kiyotaka IKEJYO, The 21st Symposium on Evaluation and Diagnosis, 2023/11/30, Without Invitation, Japanese, The Japan Society of Mechanical Engineers, Kyusyu University (Fukuoka), preprint